Practice IB Biology Topic 1.5 the Origin of Cells with authentic exam-style questions for both SL and HL students. This question bank focuses on the exact syllabus content for 1.5 the Origin of Cells and mirrors Paper 1A, 1B, 2 style where relevant.
Get instant solutions, detailed explanations, and build confidence with questions aligned to IB examiner expectations.
Which of the following characteristics found in a structure necessarily indicates that it is alive?
In an investigation of the origins of cells, which result would provide evidence supporting the idea that organic molecules can form from inorganic precursors under early Earth conditions?
Which pair of features is correct for both a human liver cell and an Escherichia coli cell?
| Human liver cell | Escherichia coli cell | |
|---|---|---|
| A. | contains DNA associated with protein | contains naked DNA |
| B. | has 70S ribosomes | has 80 S ribosomes |
| C. | contains mitochondria | contains mitochondria |
| D. | contains DNA enclosed by a membrane | contains DNA associated with protein |
Draw a labelled diagram of the molecular structure of DNA, comprising of four nucleotides.
Outline the therapeutic use of stem cells.
Giving one specific example, discuss genetic modification in organisms including the potential benefits and possible harmful effects.
Which statement is part of the cell theory?